I just bought one at a thrift store because I like the color and the pattern and I may use the pattern later. Here's my deconstruction of it....
I think it's a multiple of 13 sts plus 12 to CO.
Knit garter for 4 rows, k3, purl across, k3 on the next row (WS).
K3, *k2, p2, k2, yo, k2, p3tog, k2, yo* repeat across, end with k2, p2, k2, k3. Purl all WS rows with k3 on both ends for a garter border. End with k4 rows, BO.
sue- knitting heretic